Wireless Site Distance
Calculate great-circle distance between two site coordinates for preliminary path planning.
Result
Formula
Calculation logicFormula definitions and substituted values.
Great-circle site distance (km)
6371 * 2 * asin(sqrt(sin((Site B latitude (degrees) - Site A latitude (degrees)) * 0.017453292519943 / 2) ^ 2 + cos(Site A latitude (degrees) * 0.017453292519943) * cos(Site B latitude (degrees) * 0.017453292519943) * sin((Site B longitude (degrees) - Site A longitude (degrees)) * 0.017453292519943 / 2) ^ 2))
6371 * 2 * asin(sqrt(sin((Site B latitude (degrees) - Site A latitude (degrees)) * 0.017453292519943 / 2) ^ 2 + cos(Site A latitude (degrees) * 0.017453292519943) * cos(Site B latitude (degrees) * 0.017453292519943) * sin((Site B longitude (degrees) - Site A longitude (degrees)) * 0.017453292519943 / 2) ^ 2))Initial bearing from Site A (degrees true)
modulo(atan2(sin((Site B longitude (degrees) - Site A longitude (degrees)) * 0.017453292519943) * cos(Site B latitude (degrees) * 0.017453292519943), cos(Site A latitude (degrees) * 0.017453292519943) * sin(Site B latitude (degrees) * 0.017453292519943) - sin(Site A latitude (degrees) * 0.017453292519943) * cos(Site B latitude (degrees) * 0.017453292519943) * cos((Site B longitude (degrees) - Site A longitude (degrees)) * 0.017453292519943)) * 57.295779513082 + 360, 360) * 1
modulo(atan2(sin((Site B longitude (degrees) - Site A longitude (degrees)) * 0.017453292519943) * cos(Site B latitude (degrees) * 0.017453292519943), cos(Site A latitude (degrees) * 0.017453292519943) * sin(Site B latitude (degrees) * 0.017453292519943) - sin(Site A latitude (degrees) * 0.017453292519943) * cos(Site B latitude (degrees) * 0.017453292519943) * cos((Site B longitude (degrees) - Site A longitude (degrees)) * 0.017453292519943)) * 57.295779513082 + 360, 360) * 1Related calculators
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